package cn.detu.uu;

public class Test3 {
    public static void main(String[] args) {
        long start = System.currentTimeMillis();
        Double d =new Double(4.25);
        long end = System.currentTimeMillis();
        System.out.println(end-start);

        Double d1 = Double.valueOf(4.265);
        double dou =    d.doubleValue();



    }
}
